深层、超深层致密砂岩储层成岩相测井定量评价:以库车坳陷博孜-大北地区为例  

Quantitative well logging evaluation of diagenetic facies of deep and ultra deep tight sandstone reservoirs: A case study of Bozi-Dabei area in Kuqa Depression

作　　者：刘宏坤 艾勇[3] 王贵文[1,2] 陈康军 蔡德洋[3] 曹军涛[3] 解宇强 李栋 赖锦[1,2] Liu Hongkun;Ai Yong;Wang Guiwen;Chen Kangjun;Cai Deyang;Cao Juntao;Xie Yuqiang;Li Dong;Lai Jin(State Key Laboratory of Petroleum Resources and Prospecting,China University of Petroleum(Beijing),Beijing 102249,China;College of Geosciences,China University of Petroleum(Beijing),Beijing 102249,China;Research Institute of Petroleum Exploration and Development,Tarim Oilfield Company,CNPC,Korla Xinjiang 841000,China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京)地球科学学院,北京102249 [3]中国石油塔里木油田公司勘探开发研究院,新疆库尔勒841000

出　　处：《地质科技通报》2023年第1期299-310,共12页Bulletin of Geological Science and Technology

基　　金：国家自然科学基金项目(41872133);中国石油大学(北京)科研启动基金项目(2462021YXZZ003);中国石油—中国石油大学(北京)战略合作科技专项项目(ZLZX2020-01-06-01)。

摘　　要：博孜-大北地区巴什基奇克组为深层、超深层致密砂岩储层,岩性致密,亟需揭示储层品质主控因素,建立相配套的有利储层测井评价方法。为单井定量评价其成岩相,充分利用岩心、常规薄片、铸体薄片、扫描电镜等资料,对博孜-大北地区巴什基奇克组致密储层的岩石学、物性、成岩作用类型和强度、成岩矿物等特征进行了研究,并在视压实率、视胶结率、溶蚀孔隙含量和成岩综合系数等参数定量计算的基础上,根据成岩作用强度及其组合特征对储层成岩相分类命名,划分出中等压实弱溶蚀相、碳酸盐胶结相及压实致密相等不同的成岩相类型。通过薄片等资料与测井资料拟合分析,建立了成岩综合系数C_(g)的测井计算模型,以及定量识别储层成岩相的方法。对X1、Y1等井的测井资料进行了处理,并通过识别结果与物性分析、铸体薄片等的匹配关系,验证了方法模型的可靠性。成岩相测井定量表征方法的建立可为有利储层预测提供指导。Bashijiqike Formation in Bozi-Dabei area develops deep and ultra deep tight sandstone reservoirs. It is urgent to reveal the main controlling factors of reservoir quality and establish a matching well logging evaluation method for high quality reservoirs. In order to quantitatively evaluate the diagenetic facies, based on the data of core, thin section, cast thin section and scanning electron microscope and etc., the petrology, physical properties, diagenesis types and intensity, diagenetic minerals and other characteristics of the tight reservoir of Bashijiqike Formation in Bozi-Dabei area were studied. Based on quantitative calculation of ompaction rate, cementation rate, dissolution pore content and comprehensive diagenetic coefficient, the diagenetic facies were classified according to characteristics of diagenesis intensity and its combination. The reservoirs can be divided into three types of diagenetic facies, i.e., medium compaction weak dissolution facies, carbonate cemented facies and compaction dense facies. Through the fitting analysis of thin section data and well logging data, the well logging calculation model of diagenetic comprehensive coefficient Cgwas established, and the method of quantitative identification of reservoir diagenetic facies were established. The well logging data of Well X1,Well Y1 and etc were processed.The reliability of the model was verified by matching the identification results with physical property analysis and casting thin section. The establishment of well logging quantitative characterization method of diagenetic facies can provide guidance for "sweet spot" prediction.

关 键 词：成岩相 成岩综合系数 测井识别 博孜-大北 巴什基奇克组 深层、超深层致密砂岩 

分 类 号：TE122.221[石油与天然气工程—油气勘探]